US PATENT SUBCLASS 525 / 54.5
.~.~ Chemically combined coal, bituminous material, extract, or derivative thereof; oil shale; or fatty still residue

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


525 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
54.5.~.~ Chemically combined coal, bituminous material, extract, or derivative thereof; oil shale; or fatty still residue

DEFINITION

Classification: 525/54.5

Chemically combined coal, bituminous material, extract or derivative thereof; oil shale; or fatty still residue:

(under subclass 50) Subject matter wherein the resin system has chemically bound thereto coal, bituminous material or extract thereof or a fatty still residue.

(1) Note. Oil shale derivative similarly treated would be placed herein.

(2) Note. The material proper for this subclass (e.g., coal, etc.) can be present as a chemical constituent of a SP or SICP, a reactant with a SP, SICP, or SPFI system, or as an ethylenic agent (in the case of coal, etc., modified to have ethylenic groups).

SEE OR SEARCH CLASS

524, Synthetic Resins or Natural Rubbers, for

59, and 705 for a definition of chemically combined coal, bituminous material, extract or derivative thereof, oil shale, or fatty still residue.

526, Synthetic Resins or Natural Rubbers,

290, for solid synthetic polymer derived from ethylenically unsaturated coal, bituminous material, extract or derivative thereof; or from unsaturated fatty still residue where all monomers present are ethylenically unsaturated. 527, Synthetic Resins or Natural Rubbers,

500, for solid synthetic polymer derived from coal or bituminous material, extract thereof or fatty still residue.